【摘要】 介绍了利用磷肥副产氟硅酸为原料,采用氨水作为氨解剂制备白炭黑和无水氢氟酸的一种工艺,并研究了氟硅酸中硅的浓度、反应温度、氨水滴加速率、陈化时间、洗涤次数与白炭黑比表面积的关系.该方法所得白炭黑比表面积大,产品质量符合HG 3061-1999行业标准.更多还原

【Abstract】 This paper introduced one technology of the preparation of nanometer silica and AHF from fluosilicic acid,and discussed the silica preparation principle.The authors also did some research the relationship of fluoride concentrations of silicate,reaction temperature,neutralization speed of ammonia,and ageing time with surface of nanometer silica.Silica has high specific surface by this method.The product quality can get HG 3061-1999 industry standard requirement.更多还原